*{
    margin: 0;
    padding: 0;
}
ul{
    list-style: none;
}

.box{
    margin: auto;
    width: 500px;
    height: 200px;
    /* border: 1px solid #fff; */
    position: relative;
}
.box >.img_box{
    height: 150px;
    position: relative;
    /* background-color: skyblue; */
    position: relative;
}
/* 图片统一 */
.box > .img_box > ul > li{
    position: absolute;
    left: 0;
    top: 5%;
    width: 400px;
    transition: 0.3s ;
}

.box > .img_box > ul > .img-1{
    transform: translateX(0px) scale(0.8);
    transform-origin: left center;
    z-index: 1;

}

.box > .img_box > ul > .img-2{
    transform: translate(50px) scale(1);
    z-index: 10;
}
.box > .img_box > ul > .img-3{
    transform: translateX(180px) scale(0.8);
    transform-origin: left center;
    z-index: 1;
}
.box > .img_box > ul > .img-4{
    transform: translateX(50px) scale(1);
}

.box > .img_box > ul > li > img{
    width: 100%;
    border-radius: 15px;
}
.arrow_left{
    line-height: 40px;
    text-align: center;
    background-color: #a4a0a4;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 40px;
    cursor: pointer;
    z-index: 100;
    user-select: none;

}
.arrow_right{
    line-height: 40px;
    text-align: center;
    background-color: #a4a0a0;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 40px;
    cursor: pointer;
    z-index: 100;
    user-select: none;
}
.box > .dot_box{
    text-align: center;
    height: 50px;
    line-height: 50px;
}
.box > .dot_box > span{
    display: inline-block;
    width: 10px;
    height: 10px;
    margin: 0 5px;
    border-radius: 50%;
    background-color: #000;
    cursor: pointer;
    user-select: none;
}
.box > .dot_box > .active{
    background-color: skyblue;
}
.dot_box > span:hover{
    background-color: skyblue;
    transform: scale(1.2);
}

